In the second video you need something to start playback at runtime. The easiest option is to use the 'Start on layout' property of the timeline.
In the first video it's hard to say much without seeing the full project. Perhaps you have another behavior or some event sheet logic that is also moving the same object and conflicting with what the timeline is doing.
Thanks for reply Ashley.Can you be more specific about playback at runtime? don't get it. I don't see what you mean.On start of layout and than which action? on your video on youtube you did not used event.
the first video it's this event that make it run away